Means for driving multicraph apparatus



Jan. 29', 1924. 1,482,053

E. VERKLER MEANS FOR DRIVING MULTIGRAPH APPARATUS Filed oct. 1o`. 1921 '2 sheets-sheet n a Jan. 29, 1924. v 1,432,053. v .W. VERKLER MEANS FOR DRIVING MULTIGRAPH APPARTUS Filed'Oct. l0. 1921 2 Sheets-Sheet 2 and arrangements of lscribed and claimed.

Patented dan. 29, i924@ enigen A: fev-i 'i easa il t" .liti

WALTER E. VERKLER, GF CHICAGO, LLINOIS.

MEANS FOR DRIVING IVILTIGRAPH' APPARATUS.

dapplication `lel October 10, `1.921, Serial No. 506,541.

To all whom z' may concern.:

Be it known that l, WALTER E, /Tiiniinnn, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois,have invented certain new and useful Improvements in Means for Driving Multigraph Apparatus, of which `the following is a specication.`

My invention relates to improvements in means for driving multigraph apparatus by the application of electric energy, and has forvit-s principal object the Vprovision of an improved construction of `this character which will be highlyY efficient in use.

Other objects will appear hereinafter.

The invention consists in the combinations parts hereinafter` de- The invention willbe best understood by reference to the ,accompanying drawings forming a part of this specification, and in which,

Fig. l is a view of the discharge end of a multigraph apparatusshowing my improved driving means mounted thereon,

F ig. 2 is an end view of the same,

Fig. 3 is a view of the opposite end of the same, and

Fig. 4 isa detail sectional view of the signature shifting mechanism embodied in the invention. y

Heretofore, the means'y for driving i a multigraph apparatus by the application of electric energy was through the medium of a pinion meshing with the platen roller pinion, which in turn meshes with the print-ing drum gear teeth. In practical use this means for driving the printing drum `has been lfound to be impractical for well founded reasons. As will be understood by those acquainted with the operation of a multigraph apparatus the type banks are formed in a segment drum which is mounted, wheny in use, on the main printing drum. The seg'- ment drum when mounted on the main printing drum has the effect of a counter weight or balance, that is to say, that when the printing drum is rotated thesegment drum during its downward rotation, causes the momentum of the printing drum to increase to a speed greater than thetrotation of the platen gear. As all gears are designedv so as to permit a slight play between the engaging teeth the increase momentum ofthe.

printing drum causes the printing drum gear to suddenly take up this play. As the paper imore and more worn.

passes between the platen roller and the `type,`set in thetype banks formed inthe segment drum' the sudden increase in the momentum of the printing drum causes the type to rub on the surface of the paper producing a blurry effect. Thisl effect would even be greater when the gear teeth become Such existing conditions have costmanufacturers andv mail Aorder houses, who make a practice of mailing form .letters printed by a'multigraph apparatus to their customers, a large amount of money through waste and excessvlabor. As will be observed` by the following description of my improved driving means, Ihave completely overcome the conditions as herein mentioned.

l ln carrying my invention into elfect and with reference tothe accompanying drawings, 5 indicates a multigraph apparatus of `any improved type, b the baset and 7 the stand. lfevolubly mountedon the ends of .themultigraph apparatus is the usual printing drum 8 having gear teeth 9 formed around `its'periphery adjacent one end thereof. The multigraph apparatus .3 is also provided lwith the usual form of type carrying segment drum l() anda platen roller 1l which engages the type carrying segment drum l0 when in operation. li'flounted on the platen roller shaft l2 is a gear 13, ofthe usual form, which meshes with the printing drum gearteeth `9 and which` through the medium of an idle gear 14- drives the feed roller gear 15, This description, so far, involves partswhich are lmown to be used in connection with any improved type of multigraph apparatus but which are necessaryto set forth in'order[temere fullyV describe my improved driving means.

Mounted on the edges of each of the ends of the niultigraph apparatus 5 are bearings vl'and 171 which are preferably formed integrally with the said ends. A shaft 18 is journalled inthe bearings' 17 and 18, and projects'bcyond one of the ends of themultigraph apparatus, as at 19, (Fig. l). Rigidly mounted' on the projcctingend of the shafnby any suitable manner, is a grooved cone pulleyQ() `which is operatively connected to an electric motor (not shown) by asuitable belt 21. li/iounted on the opposite end of the shaft 18` adjacent the inner face of the bearing` 17 is a suitable driving gear 22 which meshes directly with the gear teeth 9 formed on the periphery of the printing drum 5. The driving gear 22 is shiftably mounted on the shaft 18 and keyed thereto by means of the key 23. The shifting of the gear 22 is accomplished through the medium of a spring held shaft 24 which is slidably mounted on a lug 25 formed integrally with the bearing 17.

Integrally formed on the inner end of the shaft 24 is a depending arm 26 which is ,provided with a ring member 27 engaging a recess 28 formed in the hub 22 of the gear 22. This arrangement is such that when desired,v the gear 22 may be shifted on the shaft 18 in order to mesh with a signature attachment (not shown) which is frequently used in connection with a multigraph apparatus. By this arrangement of driving means it will be noted that by meshing the driving gear 22 directly with the printing drum gear teeth 9, instead of through the medium of a platen roller gear, herein mentioned, the momentum of the printing drum is the same at all times. Thus, by this arrangement, the printing types carried by the 'seg-ment drum are prevented from rubbing on the paper which would produce a blurry effect. It will also be noted that printing drum gear teeth drive the platen roller 11 which in turn drives the feed roller gear thro'ugh the medium of the idle gear 14. By this arrangement it will also be noted that the speeds of all the revolving parts will bc timed according to their individual functions and this condition will always be the same even when the engaging teeth begin to wear. By my improved driving means a high quality of work can be produced at a very low cost. In connection with my improved means for driving the printing drum 5, I provide means for operating an automatic paper feed roller, of the usual construction used in connection with multigraph apparatus, and which, by my construction, is driven directly by the printing drum roller. This means comprises a rocker shaft 24 journalled on suitable bearings 25 formed integrally on the ends of the multigraph apparatus 5. Rigidly mounted on one end of the rocker shaft 24 is an oscillating arm 26 which is pivotally connected to a tooth rack bar 27 meshing with a pinion 28 mounted on the shaft 29 of an automatic feed roller 30 which automatically feeds paper to the platen roller 11. Mounted on the Vopposite end ofthe rocker shaft 24 is a rocker arm 31 which is pivotally connected to a bell crank 32 through the medium of a connecting link 33. This construction is such that upon every revolution of the printing drum 5 the rocker shaft 24 is caused to rock through the medium of the rocker arm 31, and the bell crank 32, oscillating the rackbar 27 throughv the medium of the oscillating arm 26 which rotates the automatic feed roller 29.

It will be seen that by my improved means While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the ap ended claims.

aving described by invention, what I claim as new and desire to secure by Letters Patent is:

1. In a driving means for a multig'raph apparatus, the combination vwith a revoluble printing drum, of a transversely disposed power driven shaft mounted on said apparatus; and driving means mounted for longitudinal movement with respect to the shaft and adapted to be directly applied to said drum, substantially as described.

2. In a driving means for a multigraph apparatus, the combination with a revoluble printing drum having gear teeth formed on the periphery thereof, of a power driven gear adapted to be shifted into meshed relation with respect to said teeth for applying driving power directly to said drum, substantially as described.

v3'. In a driving means for a `multigraph apparatus, the combination with a revoluble printing drum having gear teeth formed on the periphery thereof, of a transversely disposed driving shaft mounted on the opposite ends of said apparatus and provided with shiftable means for transmitting driving energy directly to said drum, substantially as described.

4. In a driving means for a multigraph apparatus, the combination with a revoluble printing drum, of gear teeth formed on the periphery of said drum adjacent the Aend thereof; a transversely extending shaft mounted on said apparatus, a shiftable pinion mounted on said shaft meshing directly with said gear teeth for applying driving energy directly to said drum means for shifting said pinion; and a cone pulley mounted on the opposite end of said shaft, substantially as described.

5. Ina driving means for a multigraph apparatus, the combination with a revoluble printing drum, of teeth formed on the periphery of said drum adjacent one end thereof; bearings formed on. the opposite ends of said drum; a transversely disposed shaft journalled on said bearings; a shiftable pinion on one end of said shaft meshing with said gear teeth for applying driving power directly to said drum; and driving means mounted on the opposite end of said shaft, sulistantially as described.

6. In a driving means for a multigraph apparatus7 the combina-tion with a revoluble drum having gear teeth formed on the periphery thereof and an automatic feed roller therefor, of 'a transversely disposed shaft mounted on the opposite ends of said apparatus; a gear on said shaft meshing with said gear teeth for applying driving power directly to said drum; and a transversely disposed rocker shaft mounted on said apparatus and operatively connected to said roller and said drum, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WALTER E. VERKLER.

Witnesses:

FREDA C. APPm'roN, JOSHUA R. H. PoTTs. 

